Could be related to #203.

Reported by rusted:

Now my replays are void. Entities are shown but there's nothing else. Any ways to fix?

okay found the problem. if you start recording while sitting on boats or horses or something like that, it won't record it properly

I couldn't get them to send me a log file or a replay recording, but it sounds simple enough to reproduce, so I'm still opening this issue.

Cannot reproduce.

https://paste.ee/p/xM7O0